Nailing-machine.



PATENTED MAR. 28, 1905.

L. A. GASGRAIN.

NAILING MACHINE.

APPLIOATION FILED 1320 18, 1895.

4 SEETSSHEET 1.

PATBNTED MAR. 28, 1905.

.L. A GASGRAIN. NAILING MACHINE.

IIIIIIIIIIIIII ED DEO.18, 1895.

'Jozcc's Ca yrac'rv.

PATENTED MAR. 28, 1905. L. A. CASGRAIN. NAILING MACHINE.

APPLICATION FILED 1330.18, 1895.

4 SHEETS-SHEET 3.

a f! I v loads a. 6:

No. 786,190. PATENTED MAR. 28, 19 05.

L. A. GASGRAIN.

NAILING MACHINE. APPLIGATION FILED DEC.18,1895.

4 SHEETS-SHEET 4.

' 13 mmlrm he e/ 507.

Joan's CZ. Ca s 'ran UNITED STATES Patented March 28, 1905.

PATENT OFFICE.

LOUIS A. CASGRAIN. OF IVINCHESTER, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGNMENTS, TO THE UNITED SHOE MACHINERY COMPANY, A CORPORATION OF NEWJERSEY.

NAILIANG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 786,190, dated. March28, 1905.

, Application filed December 18, 1895. Serial No. 572,492.

ject of the Queen of Great Britain; residing at Winchester, in thecounty of Middlesex and State Massachusetts, have invented anImprovement in Nailing-Machines, of which the following description, inconnection with the accompanying drawings, is a specificatiomlikecharacters on the drawings representing like parts.

This invention relates to that class of machines particularly adaptedfor use in the manufacture of boots and shoes, wherein fastenings aresevered from the wire-like material of suitable character and insertedby driving means for any purposeas, for instance. into the outer sole ofa boot or shoe to secure it to the upper and to the inner sole, or toreinforce or quilt the outer sole, or to slug the heel of a boot orshoe.

In the machine hereinafter to he described, which embodies one form ofmy invention, I have provided means to adapt the fastenings to thethickness of the stock when uniting a plurality of thicknesses ofmaterial,such as an outer sole to an inner sole. WVhen, however, themachine is used for inserting short fastenings to quilt soles and singheels it is not necessary to vary the length of the fastening accordingto the thickness of the stock, because it does not reach through thestock. The machine is also readily adapted for driving fastenings formedfrom wire-like material of any desired cross-sectional shape.

In the present embodiment of my invention I have provided means toefiect automatically the separation of the work-support or horn and thecooperating presser when the nailing operation ceases, to thereby permitthe work to move freely between such work-support and presser or to beremoved from or applied to the machine. Means are also provided todepress periodically the horn for feeding the work and to impart to thehorn or work-support a final depression and leave it down for theremoval or application of the work.

I have simplified in various particulars the construction of theapparatus as a whole.

I have also provided means whereby when the clutch and driver-pulley arereleased the last nail before stopping will be driven and the horn orwork-support depressed by the momentum of the main driving-shaft, sothat when the brake is applied to bring the mechanism to a full stopthere is very little resistance to overcome and the main shaft andcooperating mechanism will be stopped immediately.

The wire-like material from which the nails or fastenings are cut isshown herein as contained in a horizontally-supported reel or carrierfreely rotatable about a central support and open interiorly to permitthe wire-like niaterial to be drawn from the inside of the coil as it isfed to the apparatus, the rotation of the coil and reel preventing twistin the wire between the reel and the cutting and driving mechanisms.

These and various other novel features of my invention will be fullydescribed in the subjo'ined specification and particularly pointed outin the following claims.

Figure 1 is a right-hand side elevation of the upper part or head of anailing-machine embodying my invention, the column, pro vided with abase to rest on the floor, being omitted, as are the usual treadlesconnected therewith. Fig. 2 is a right-hand elevation, partly brokenout,'of the lower part of the column and base, with the treadles forcontrolling the machine and moving the horn or worksupport. Fig. 3 is anenlarged sectional detail taken on the line .1100, Fig. l,looking towardthe right. Fig. 4 is also an enlarged section taken on the line a"(0,Fig. 1, showing the feed-stop. Fig. 5 is an inner side view of thehorn-controlling cam and its cooperating mechanism. Fig. 5 is anenlarged detail of the pawl-controller to be described. Fig. 6 is a rearend elevation of the clutch, brake, and wedgeblock. Fig. 7 is a planview of the foot or presser to be described. Fig. '7 is a perspectiveview of the spring-like cover mounted on the )resser. Fi 8 is a planview of a modil clutch member 0 into 0 erative en a ement lied form offoot or presser. tional detail thereof on the line :0 a, Fig. 8. Fig. 9is an enlarged longitudinal sectional detail showing particularly thethroat or nailcarrier and its operative parts on the line 0 m Fig. 10.Fig. 10 is a transverse sectional view taken on the line 00 Fig. 9.Figs. 11 and 12 are views in side elevation and plan, respectively, ofthe work-gage to be described.

The main framework comprises a column A, having at its upper end a headA of suitable shape to provide bearings or supports for the variousworking parts, the base A of the column (see Fig. 2) resting on thefloor and supporting the treadles to be described, the horn B, of usualshape, being rotatable on the hornshaft B, longitudinally movable in asuitable bearing A. of the column. The horn-shaft is prolonged by a rodB, jointed to a treadle B and surrounded by a spiral spring B" withinthe base, the spring at its upper end bearing against the adjustable nutB, screwed on the rod B to support the horn in a yielding manner, asshown in Fig. 2 and substantially as shown and described in UnitedStates Patent No. 403,835, to which reference may be had. The treadle Bhas jointed thereto at its rear end a rod B, the upper end of which isformed as a rack (Z longitudinally movable in guides (Z3011 the column,said rack being engaged by a pawl (Z on a pawl-carrier (Z which islifted once at each revolution of the main shaft to be described tothereby, through the rod B and treadle B depress the horn B while thestock is being fed,the pawl-carrier d being also guided by the guides (Zas shown,and similarly lettered in United States Patent N 0. 265,227 towhich reference may be had. As in said patent, the cam-block disengagesthe pawl (Z from the teeth of a rack 6Z5 as the carrier is depressed,the spring B" (see Fig. 2) then immediately acting to raise the horn Bagainst the under side of the stock whatever its thickness. The spring Bis of suitable strength to sustain the horn firmly for the driving ofthe fastenings. By means of the foot-treadle B the operator may depressthe horn against the resistance of the spring B, the rear end of saidtreadle resting against the lever B at the rear of its fulcrum.

Referring to Fig. 1, the main shaft C (shown by dotted lines) issupported in bearings in the head A and has fast thereon a cam-disk C,the periphery of which forms one member of a friction-clutch, themovable member U of said clutch being shown as loose on the main shaftand adapted to be continuously driven by a suitable belt. (Not shown.) Acollar C having a rearwardly-inclined face C", is longitudinally movableon the main shaft between the hub of the member C and a collar C fast onthe shaft. A wedge-block C, attached to the upper end of a rod (1cooperates with the collar 0 for forcing movable Fig. 8 is a sccwithfast clutch member 0 upon upward movement of rod C and for permittingthe release of the clutch members upon a downward movement of the rod,said rod being jointed at its lower end to a treadle U pivoted to thebase at C, (see Fig. 2,) the rod being normally depressed by a suitablespring C Fig. 1. The disk 0 has on itsinner face a cam 0, (see Fig. 5,)against which is held a roller or other stud c on a lever 0 pivoted on astud a, secured to the head, the lever 0 having mounted therein a shortshaft 0 Figs. 1, 5, and 6, having an eccentric or crank pin 0 thereon,fitted into a block 0 which block is moved downwardly and to the left,viewing Fig. 6, when the shaft is turned in the direction of the arrow10 by means of a handle o At the outer side of the lever c a sleeve 0 ismounted to rock on the laterally-extended hub c of said lever, embracingthe stud 0, said sleeve having two arms a" and 0 (see Fig. 6,) theformer of which is grooved or recessed to embrace the block 0 which isslidable in the arm 0', while the arm 0 at its outer end enters a recess0 in the clutch-controlling rod C as shown in Fig. 6. l/Vhen the machinehas been brought to a stop, with the parts in the position shown in Fig.6. the operator may turn the handle 0 in the direction of arrow 10, andthe crank-pin 0 will be turned to lower the block 0 and move it to theleft, Fig. 6, rocking the sleeve 0 to depress the arm 0 depressing therod 0 so that if thereafter for any reason the treadle is depressed thesaid rod cannot be lifted far enough to throw the clutch into operation.By this throw-off device I insure that the clutch shall not be closedunintentionally. This avoids all danger of the machine being startedaccidentally at an inopportune timeas, for instance, while adjustment ofany of the mechanisms is being made. A spring 5 in a housing 0 on thelever o bears against aflattened portion of the shaft 0" to hold it inone or the other position. The thin rim of the disk 0' is embraced by asegmental brake-shoe 0 which is notched at c, Fig. 6, to rest upon a lug0 on a collar o clamped to the hub o (see dotted lines, Fig. 1) orforming part of the lever 0 said hub extending between the stud 0* andthe outer sleeve 0 The spring (1* normally holds the roll 0 against thecam c, and when in the position shown in Figs. 5 and 6 the lug 0 pressesthe shoe against the disk 0' to completely brake it when the clutch isfully released. A camgroove 6 is formed in the inner face of the disk C(see Fig. 5) to engage a roller or other stud a on a leverfi. The levere is pivoted on a stud e in the head of the machine and its outer orleft-hand end, viewing Fig. 5, is connected by a link a with thepawl-carrier (Z for depressing the horn at times. The disk C is rotatedin the direction of the arrow 15, Fig. 5, and from the point 4; to thepoint 3 the ICC cam-path is shaped to rock the lever e by first carryingthe stud 6 toward the center of rotation to raise the pawl-carrier anddepress the horn for permitting the work to be fed by the aw], ashereinafter explained, and then carrying the stud e away from the centerof rotation to lower the pawl carrier for permitting the horn to beagain elevated by its spring 13* for clamping the work. When thepawl-carrier is lowered, as stated the camblock (Z forces the pawl (Zout of engagement with the rack-bar and permits the rod B to move freelydownward for allowing the horn to raise and clamp the stock under theinfluence of spring B. From the point 3 to the point 2 the cam-path e isconcentric with the center of rotation of the disk C, so that nomovement is imparted to the lever e by this portion of the path and thehorn remains raised. From the point 2 to the point 4: the outer wall ofthe cam-path is concentric with the center of rotation; but the innerwall approaches said center, so as to make a wide portion of thecam-path and permit the lever to have movement at times, as hereinafterdescribed,for giving final depression to the horn. Normally the roll awill bear against the outer wall of the cam-path c and be actuated onlyby that portion of the path which is between the points 4 and 3. Thisportion will rock the lever a first to depress the horn for permittingthe feed and then to allow the horn to be raised again by the spring 13*for clamping the work, as stated. The inner or right-hand end of thelever c is notched or shouldered at 0, Figs. 5 and 5, to be at timesengaged by a pawlf, pivotally mounted in a boss f of a pawl-carrierhaving a sleeve-like hub f to embrace the stud 0 said pawl-carrierhaving on its side nearest the disk 0 a roll f to be acted upon by aspecies of tappet-cam f A housing f on the pawl-carrier receives aspring 8, which, resting at its lower end on a fixed part of the head,maintains the roll f in engagement with the tappet or quick-motion camf. The pawl f is governed as to its engagement with the lever e by apawlcontroller f shown as e an arm pivoted to the lever 0 and having abeveled lug f and a notch f on its upper side near its extremity tocooperate with a tooth on the side of the pawl f, a spring 8 pressingthe controller toward the said tooth, as shown in Fig. 5. Now when theclutch-rod C is raised to start the machine the lever c is swung therebyto the right from the position shown in Fig. 5, so that the tooth f ofthe pawl f will enter the notch f of the pawl-controller f the spring ayielding slightly to allow it to pass over lug f lontinued movement oflever 0 will draw the pawl f from the notch e of the lever 0 because themovement is so rapid that the pawl is withdrawn from said notch a beforethe tooth f can escape from notch f Since the end of pawl f is inclined,

it depresses the right end of lever a slightly as it is withdrawn, andtherefore a clearance is provided between roll a on the lever and theinner wall of cam-groove 0. So long as the operator holds lever 0 out tothe right, as he may do by keeping the treadle C depressed by his foot,it will be impossible for pawl f to engage the lever e as thepawl-carrier is oscillated back and forth by the tappet-cam f during therotation of the main shaft C in the operation of the machine. Thus thelever 6 is left under the control of the outer wall of the cam-groove sothat it is automatically raised thereby to depress the horn to permitfeeding of the work and also periodically depressed to causedisengagement of the pawl (Z from the rack-bar d and permit the spring Bto act to raise the horn and clamp the work, as hereinbefore described.When the treadle C is released while the machine is in operation, themain shaft will continue to rotate, since the high part of the edge camc by its engagement with roll 0' prevents lover a from swinging to theleft, viewing Fig. 5, under the influence of spring O Thus the clutchremains operative and the brake inoperative until the low part 9 of thecam comes into engagement with the roll 0, when spring O is permitted toswing the lever a short distance to the left. This movement, allowed bythe low part 9, is sufficient to release the clutch, but is not enoughto cause the brake to be applied. Therefore the main shaft continues torotate, moving through a predetermined angle, until the lower part 10 ofthe edge cam arrives in position to cooperate with the roll 0 on thelever 0 This lower part 10 of the cam permits the lever to move farenough to cause the brake to be applied and the machine to be stopped.During the movement of the lever 0 permitted by the part 9 of the edgecam, the pawl-controller f is moved to the left, so as to allow the pawlf to engage the notch in the right-hand end of the lever 6 tooth f lyingin notch f. As lever c is rocked still farther to the left when thelowest part 10 of the cam is reached pawlcontroller f 7 is forced tomove past pawl f, so that these parts take the position shown in Figs. 5and 5. The tappet-cam f is so positioned on the main shaft that it willactuate the pawl-carrier f immediately after the pawl f has engaged thenotch in the lever e and will depress said pawl-carrier and rock thelever e for lifting the rod e", and finally depressing the horn farenough to permit the work to be removed from it and a new piece of Workapplied to the horn. The final depression of the horn, therefore, iseifected by the momentum of the moving parts after the clutch isreleased and before the brake is applied. The rocking of the lever e bymeans of the tappet-cam is permitted by the wide part of the cam-groove0 between the points 2 and 4E. The brake is applied at the time that thehighest part of the tappet-cam engages the pawl-carrier 7, so that themachine is stopped with the horn depressed, the parts being in theposition shown in Fig. 5. The final depression of the horn to permit theremoval of the work lowers it a greater distance than it is necessaryfor it to be lowered for permitting the feed of the work. The mechanismwhich effects release of the clutch and applies the brake includes thespring C as will be manifest, and this spring is thus a common actuator,as it maybe termed, for releasing the clutch and applying the brake. Theoperation of such mechanism is arrested automatically after release ofthe clutch by the cooperation of the part 9 of the cam c and the roll 0on the lever e, such arrest being maintained during a predeterminedangular movement of the main shaft. The extent of this angular movementdepends upon the length of the part 9 of the cam, and the arrangement issuch that the horn is depressed by the tappet-cam f, and thefastener-inserting mechanism hereinafter referred to is given its finalmovement from the main shaft during such angular movement of the shaftwhile the portion 9 of the edge cam c is in position to cooperate withthe roll on the lever c that is to say, after the clutch has beenreleased and before the brake has been applied by reason of the part 10of the edge cam coming into cooperation with the roll on the lever o itwill be manifest that the brake is held in inoperative position untilafter the completion of this angular movement, thus enabling me toutilize the momentum of the main shaft after clutch release to effectthe depression of the horn for removal and application of work and thefinal movement of fastener-inserting mechanism for driving the lastfastening. The machine is then easily brought to rest by the brakewithout shock. This mechanism for giving a final depression to the hornis rendered inoperative when the horn is quickly depressed throughtreadle B while the machine is at rest. Thus, supposing it is desired toinsert an unusually thick piece of work between the horn and the presseror foot, the operator depresses the treadle B thereby relieving thelever c from the stress due to spring B" and the weight of rod B Aslight upward force also is exerted upon rod a as the rack-bar (6"passes by its pawl (1, since the pawl is held against the rack-bar withconsiderable pressure by its spring. Hence the stiff spring is strongenough to force the wedge-like lug f upwardly along the left side oftooth f which swings the pawl f a sufficient distance to withdraw itfrom notch e. Lever 0 being released from the pawl f, rod 0 is loweredand camblock (Z disengages pawl (Z, so that the horn will be raised toclamp the work upon the release of treadle B Now when lever c is swungto the right upon the starting of the machine pawl f near i its pivotcontacts with the side of the recess in boss f", through which itpasses, and controller f is pulled past the pawl until tooth f is seatedin notch 7", which is the position of the parts when the machine isrunning with the treadle depressed, as above explained The roll f" ispreferably mounted eccentrically on a stud 40, Fig. 5, so that wear maybe compensated for, as it is important that the movement of thepawl-carrier f and the lever be timed accurately to follow each other intheir motions at just the right instants.

A measuring-leg a, Figs. 1 and 3, has adjustable thereon a collar 0,adapted to descend against a stop e on the head A, through which themeasuring-leg is guided, the extent mining the length of the nail orfastening to be cut from the wire-like material, such ad justment beingmade by the operator. The leg (6 is connected with an arm of apawl-carrying sleeve (1), which has a second arm, provided withspring-pawls a", (see Fig. 4,) which act on a ratchet-wheel (65,connected to a feeding-wheel a, peripherally scored or serrated toengage and feed the wire-like material 20 used, which latter is pressedagainst said wheel by a presser-wheel (I, mounted in a yoke o adjustablyattached to the head by a screw (0". hen it is desired to stop thefeeding of the wire for any purpose without stopping the entire machine,a feed-stop, shown in Figs. 1 and 4 as an arm 75, pi votally mounted ina part of the head A, is swung up into dottedline position in saidfigure beneath the arm (0 preventing its descent, to enable the pawls ato engage a new portion of the ratchetwheel. Normally said stop is swungdown into inoperative position, shown in full lines in Fig. 4. Theperiphery of the presser-wheel (6 will preferably be grooved andserrated suitably to engage \virelike material of any desired shape incross-section, said groove also alining the wire with the passagesbelow. It will be obvious that the back stroke of the pawls a isregulated by the position of the collar (5 on the measuring-leg toeffect at their next forward stroke a greater or less rotation of thefeed-wheel to provide for the desired length of fastening. A third armof the sleeve (6 has a suitable roll (0 (see Fig. 3,) acted upon by acam (612 on a disk at. The cam a has a flat portion a, which permits theroll to move freely, more or less, when the pawlcarrier is moving on itsback stroke to assume a starting position, the roll moving a distance inaccordance with the adjustment of the collar a on the measuring-leg abefore the rise a engages and lifts the roll to thereby effect the feed.\Vhen the wire is fed forward more or less by such movement, thecutters, to be hereinafter described, are actuated to cut or sever aportion of the wire to form the nail- 1 or fastening to be driven. Theedges of the of longitudinal movement of said leg deter-.

cutters which engage and sever the wire are beveled, and these two edgesare brought together in the wire. Now if the Wire be held rigidly by thefeed mechanism during the cutting, the beveled edges of the cutters willhave to not only cut into but also compress the wire, and a very greatstrain will be put upon not only the cutters, but their actuatingmechanism as well. On the contrary, if means are provided for permittingthe wire to move in a retrograde direction slightly as the edges of thecutters enter it the strain upon them and their actuating mechanism willbe greatly reduced. I have herein provided such means by cutting awaythe cam a at a" at the end of the feed portion a, Fig. 3, so that as thecutters enter the wire to sever it the roll (0 will enter the depressiona, and thereby the pawl-carrier is permitted to move back slightly,releasing the wire sufficiently to allow it to be moved backwardly bythe action of the cutters. Such release of the feed, as it may betermed, does not cause a disengagement of the feed-wheel'and wire, butonly allows a slight retrograde movement thereof. A strong spring Sdepresses the measuring-leg, as clearly shown in Fig. 3, and maintainsthe roll a in position to be acted upon by the cam.

The wire-guide is shown in Fig. 4 as two plates 7) b, the formerprovided next the plate 7/ with a guide-groove shaped to correspondsubstantially to the cross-section of the fastening material, the lowerend of plate 5 having a steel wear-plate If. The driver-bar b hasattached to it a driver 6*, Figs. 1 and 9, which enters a driver-passagein a guide I), suitably attached to the head of the machine.

The awl it is attached to an-awl-bar, (not shown, as it forms no part ofmy invention,) and the awi-bar is reciprocated by an arm h, forming partof a two-armed lever mounted on a stud if and having a second arm itprovided with a suitable roller or other stud, which enters a groove inthe outer face of a cam-hub fast on theouter end of the main shaft G.The awl-bar shank slides vertically in a rocking frame 71, having asleeve-like hub v", embracing a hub surrounding the main shaft in frontof the cam-disk a. The stock is fed while the awl is in it by means ofsuitable devices forming no part of this invention, but which are shownand described in United States Patent No. 563,478, to which referencemay be had for a fuller disclosure. These devices, however, will beherein described briefly. A movable side guide i is attached to thefront side of the rocking frame, and at the rear of said frame isattached a guideway having a movable side 2:", in which guideway isplaced a swivel-block vi, (see Fig. 3,) entered by a pin 80, extendedfrom a dovetailed slide 7 toothed at one side and fitted into a passagein a rocking arm 8, connected to a short rockshaft 27, having an arm 2'provided with a roll which enters a cam-groove 2' at the outer side ofthe disk a, (see Fig. 3,) the rock-shaft by engaging the sliding blockmoving the rocklug frame to effect the feed. A stud-gear a on the arm vjengages the teeth of the slide 2- and moves it relatively to said armand rocking frame to alter at will the length of feed.

The main shaft G has a cam 71:. provided peripherally with a groove inwhich enters a roller or other stud of a toothed lever 7:, pivoted atits upper end on an eccentric stud 90 on the head, the lower end of saidlever having (see Fig. 9) rack-teeth to engage the teeth of a block if,having extended loosely through it the reduced end if of a shaft k, theblock 71: being held securely on said shaft by a nut 95. The shaft end kis provided with a longitudinal threaded hole with a flaring outer endto receive a screw-bolt 711", having a conical head, the end of theshaft being split at if, so that when the nut 95 has been turned up onthe shaft to the proper point to prevent endwise movement in the blocktightening of the screw-bolt will clamp or lock the nut, so that rockingof the shaft 7: will not loosen it. It will be noticed by referring toFig. 9 that the block 71: slides in a bearing in the frame or head A andthat there is a clearance b between the upper side of the shaft and theblock, since the reduced circular end Z7 of the shaft is made of lessdiameter than the internal diameter of the block. As the block wears onits under side it moves away from the toothed lever Zr, the clearancepermitting such movement, and by turning the eccentric stud 90, on whichsaid lever is mounted, it is lowered to maintain its toothed end inproper engagement with the block, a set screw 105 normally holding thestud clamped. The forward end of the shaft if has attached to it asuitable throat Z0 into which the wire or wire-like material is fed fromthe wire-guide, and when a fastening or nail has been cut off the throatis moved, with the fastening, into the d river-path, the lever 71'.effecting such longitudinal movement of the throat. As the wire-passageis inclined and the d riverpath is vertical the throat must be tippedslightly in moving from one to the other, and this is effected by meansof a sleeve l1, embracing the shaft ]0 and slotted longitudinally toreceive a spline Zr which enters a longitudinal groove 7. in the shaft,so that oscillation of the sleeve will be imparted to the shaft withouthindering longitudinal movement of the latter. A lever a, split at itsend at is, (see Fig. 10,) is mounted upon the sleeve k and receives aportion of the spline 75 a suitable serew-bolt [r clam ping the leverupon the sleeve, and thereby holding the spline tightly, and the leverZ9 has a roller or other stud to enter a cam-groove at the rear side ofthe disk a.

The movable cutting-blade m, Figs. 4 and 9, is held in adjusted positionon an arm 70" of the sleeve Zr by means of a cap-plate m and screw 711?,while a screw an", longitudinally movable in said arm, bears against theouter end of the cutter, so that it may be readily moved inward asdesired without partially dismembering the machine. The stationarycutter m (see Figs. 1 and 4) is held between the head of the machine anda detachable cap m by a suitable set-screw m, and when the wire-likematerial has been fed into the throat K7 the sleeve F is rocked, causingthe movable cutter to pass the lower end of the wire-guideway and cutthe wire off, the throat at the same time being tipped intosubstantially vertical position to thereafter be moved forward under thedriver to enable the latter to strike the nail or fastening and drive itfrom the throat into the work. During the forward movement of the throatcontaining the loose fastening the lower end of the latter may ride overa suitable foot or presscr a (shown separately in Fig. 7) until it comesover the awlhole 71/ therein, through which the fastening passes to thework. Referring to Figs. 7 and 9, the foot or presser w is recessed onits upper side at 7/3, and a large hole 12 and two smaller holes a" andMarc drilled through the presser. A spring plate or cover it, havingholes n and a punched therein to leave rims or burs on the under side toenter, respectively, the holes 123 and a", is held in the recess abetween the presser and the adjacent portion of the head A, as shown inFig. 9, the bur or rim a forming a pivotal point for the cover-plate.Normally the cover-plate is in the position shown in Figs. 7 and 9, withits front end covering the hole n. and held in place between the pressern and the adjacent part of the head; but if the operator desires toadjust the cutters he stops the wire-feed and moves the plate 42 to oneside until the hole n. is uncovered, and he then can insert from below apiece of wire to be acted upon by the cutters until the desiredadjustment is effected, thus obviating waste of the wire and a tediousfeeding thereof little by little.

In the modification, Figs. 8 and 8, the presser or footn has asinglehole made therein to receive a rotatable block a, upset at its ends toretain it in place and having an cecentric hole ntherctln'ough normallyin the position shown in Fig. 8; but by giving the block a partialrotation the hole n is brought into position to enable a piece oftest-wire to be inserted for use in adjusting the cutters.

Referring to Figs. 1, 11, and 12, I have pivoted a support or arm 0 on astud r/ of the head or frame, which is acted upon by a springpin 0 whenin the position shown to retain it elevated, the outer end of said armforming a bearing for a transverse rotatable stud 0 which receiveseccentrically a screw pin or stud 0, having a threaded end 0' reduced indiameter and screwed into the stud and also having a shank a, whichslides in a slot o. This part 0 has its upper end 0 turned inwardly toslide in a slot or groove on the.

side of the hearing at the outer end of arm 0, thus forming a guide orslide way for the gage. A spring-washer e is interposed between the headof the screw-pin u and the end of the gage to press the latter firmlyinto the preferably recessed face of the stud-bearing, rotation of thestud by means of the slot-and-pin connection moving the gage alongitudinally toward or away from the front of the machine below thefoot or presser'n, the spring-washer 0 holding it in adjusted position.A rod 0 held by screws 0 in the stud-bearing, is bent at its ends toform limiting-stops for the extreme longitudinal movement of the gage.\Vhen it is desired to nail across the sole of a boot or shoe, the armor support 0 may be turned down on its fulcrum 0 entirely out of theway.

The head of the machine has rigidly secured to it a laterally-extendedarm '2', upturned at its outer end to form a support for a reel for thewire IV. The reel comprises, essentially, a centrally-open bottom plate0' and a series of arms '1', radiating from the hub 1' said arms beingdownturned at their outer ends to the bottom plate. The construction ofthe reel, however, forms no part of my present invention, as it formsthe subject-matter of and is claimed in another application filed by meas adivisional case from this present application and already issued asPatent No. 765,650, dated July 19, 1904. The wire is drawn from theinterior of the coil through the open center of the plate o and therebycauses the reel to rotate freely in a horizontal plane about itsvertical axis, and as the wire passes to the fixed guideway the freerotation of the reel about a fixed vertical pivot prevents twisting ofsaid wire.

I have so arranged the operation of the clutch, brake, and nail-drivingmechanisms that the clutch is first released when the roll a istraveling over the lover part 9 of the edge cam 0 before the brake isapplied, and the brake is applied after the release of the clutch, whenthe roll 0' passes to the still lower portion 10 of said cam c, andbetween the time when the roll 0 passes to the part 9 and leaves it themomentum of the main drivingshaft C is taken up and utilized by thedriving mechanism and the horn-depressing device, both hereinbeforedescribed. As the momentum is thus employed to perform work, the lattergradually absorbing power derived by or through the momentum, it isobvious that when the brake is applied after the roll 0 passes from thepart 9 to the lower part 10 of the earn 0 there is very littleresistance due to the momentum of the machine to be overcome, and themachine will be stopped immediately without undue shock.

From the foregoing it will be obvious that when the machine is inoperation the horn will be periodically depressed sufficiently to permitthe Work to be removed from or applied to the horn or for feeding andthe horn is also in depressed position when the machine is stoppedwhether a single nail or fastening or any number be driven, themechanism employed for periodically depressing the horn being also usedwhen the horn is finally depressed. Both the periodical and finaldepression of the horn are automatic, and the machine when stopped isalways in position to have the work removed, and consequently themachine is always ready to receive work without requiring the operatorto first lower or depress the horn.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is

1. In a machine of the class described, a main shaft, mechanism forinserting fastenings, a clutch and a brake, means governed by rotationof said shaft to effect release of the clutch, operating devicesactuated from the main shaft and arranged to derive their final movementfrom the main shaft after release of the clutch, whereby the momentum ofsaid shaft is taken up and utilized prior to application of the brake,and means to maintain the brake in inoperative position until after suchutilization of the momentum, to prevent shock as the machine is stopped.

2. In a nailing-machine, a main shaft, a clutch therefor and a brake,means governed by rotation of said shaft to effect release of the clutchand subsequently apply the brake to stop rotation of the shaft,nail-driving devices arranged to derive their final movement from themain shaft after release of the clutch, whereby the momentum of theshaft is taken up and utilized prior to application of the brake, andpositive means to hold the brake from movement to operative positionuntil after such utilization of the momentum, to prevent shoek as themachine is stopped.

3. In a nailing-machine, a main shaft, a clutch therefor and a brake,means to effect the release of the clutch and the application of thebrake, nail-driving devices arranged to derive their final movement fromthe main shaft after release of the clutch, whereby the momentum of theshaft is taken up and utilized prior to the application of the brake,and positive means, including a member rotatable with the shaft andindependent of the clutch, for governing the clutch-releasing andbrake-applying means to hold the brake from movement to operativeposition, after release of the clutch, until the momentum of the shaftis taken up and utilized. j

4C. In a nailing-machine, a main shaft, a clutch therefor and a brake.mechanism to release the clutch and apply the brake successively, meansgoverned by rotation of the shaft to maintain the brake in inoperativeposition through a predetermined angular movement of the shaft.following clutch release, and naildriving devices to derive their finalmovement from the main shaft during such predetermined angular movementthereof, whereby the momentum of the shaft is taken up and utilizedprior to the application of the brake.

5. In a nailing-machine, a main shaft, a clutch therefor and a brake,mechanism, including a common actuator, to release the clutch and applythe brake successively, means to arrest the operation of said mechanismautomatically after release of the clutch and during a predeterminedangular movement of the main shaft, and nail-driving devices'to de rivetheir final movement from the shaft during such arrest of saidmechanism, whereby the momentum of the shaft is taken up and utilizedprior to the application of the brake.

6. In a nailing-machine, a horn, a main shaft, means, includingagoverning member, operated by said shaft, to periodically depress thehorn for feeding the work, and a device between said shaft and saidgoverning memher, to give to the latter an additional movement, andthereby impart to the said horn a final depression when the machine isstopped.

7. In a nailing-machine, a horn, a main shaft, means, including arocking lever, operated thereby to periodically depress said horn forfeeding the work, and devices between said shaft and said rocking lever,to give to the latter an additional rocking movement to impart to saidhorn a final depression and leave it down for the removal or applicationof the work.

8. In a nailing-machine, a horn, a main shaft, means operated thereby toperiodically depress said horn for feeding the work, and devices betweensaid shaft and said means, to give to the latter an additional movementto impart to said horn a final depression and leave it down for theremoval or application of the work, combined with a brake, and abrake-controller to put into or out of operative relation the saiddevices located between the main shaft and the means for periodicallydepressing the horn, whereby the brake is also appliedto the main shaftto restrain its rot. tion.

9. In a nailing-machine, the following instrumentalities, viz: a horn, amain shaft, a cam and a clutch thereon, a clutch-rod, a brake, and abrake-controller cooperating with the cam, and means operated by the camto periodically depress the horn for feeding the Work, combined withdevices governed by said brake-controller. and located between the camand the means for periodically depressing the horn to finally depressthe latter, a starting and stopping mechanism, adapted when operating tostop the machine to cause the brakecontroller to put into operativerelation the said devices located between the cam and the means forperiodically depressing the horn,

to thereby impart an additional final movement to said horn.

10. In a nailing-machine, a horn, a controller-lever. connectionsbetween said lever and horn, and a cam to act on said lever at one sideofits fulcrum, combined with a pawlearrier having a pawl, means to movesaid pawl-carrier, and means to move the pawl on the said carrier,whereby it may at times engage the opposite end of said lever and impartto it an additional movement in a direction to finally depress the hornand leave it down for the removal of the work.

11. A hollow sleeve, a movable cutter connected therewith, a fixedcooperating cutter, a shaft longitudinally 'movable within said sleeveand provided with a nail receiving throat, an arm to rock said sleeve, aspline connecting said shaft, sleeve and arm, and means to clamp the armupon the sleeve and thereby clamp the spline.

12. A cutter-carrying shaft, a toothed block to receive the end of theshaft and leave a clearance between the upper part of the shaft and theblock, clamping devices to hold said block in adjusted position upon theshaft, atoothed actuating-lever for said block, and an adjustable studupon which said lever is mounted, whereby wear of the block may be takenup by adjustment of said lever and clamping devices.

13. In anailing-machine, wire-receiving devices, a movablenail-receiving throat therebelow, a presser upon which the lower end ofa nail loose in said throat rests during movement of the latter, saidpresser having a naildischarge opening, and an auxiliary opening belowthe wire-receiving devices, and means to normally bar the passage of anail through the auxiliary opening.

14. A presser for nailing-machines, having a passage for the nail and anauxiliary passage, and a cover-plate mounted to swing laterally upon thepresser, to normally cover the auxiliary passage.

15. Inanailing-machine,ahorn,mechanism, including a lever, to depressthe horn, a cam to rock said lever periodically to depress the horn andpermit feed of the work, a pawl to cooperate with and rock said leverwhen the machine is about to be stopped, to finally depress the horn, apawl-carrier and means to move it, and a pawl-controller to disengagethe pawl and lever when the machine is running continuously.

16. In a nailing-machine, a main shaft, a horn and means normally actingto raise it, a treadle by which it may be depressed, mechanism,operatively connecting the main shaft and the horn and including amovable connecting member, for giving a final depression to the horn asthe machine comes to a stop, and means for automatically moving saidconnecting member, when the treadle is actuated to depress the horn,thereby to render inoperative said mechanism for giving a finaldepression to the horn.

17. In a nailing-machine,feeding mechanism for the wire, comprising afeed-wheel, its actuating-pawl and pawl-carrierya feed-cam having afeed-releasing portion, connections between said cam and pawl-carrier,to actuate the latter, cutting devices to sever a nail or fastening fromthe wire, and actuating mechanism therefor, the feed-releasing portionof the cam permitting slight retrograde movement of the wire andfeed-wheel when the cutters operate, to release the latter and thecutter-actuating mechanism from strain.

18. In a machine for inserting nails into boots and shoes, thecombination of the following instrumentalities, via: a verticallymovablehorn or work-support; a rotatable shaft; a cam on said shaft to effectmovement of the horn downward a sufficient distance to permit the workthereon to be taken from or applied to the said horn; intermediatemechanism connecting said horn with said cam; and a brake mechanism tostop the rotation of the cam-shaft, adjusted with relation to the saidcam to operate to stop rotation of the said shaft when the point ofgreatest throw of the horn-lowering cam is acting upon the saidintermediate mechanism to lower the horn, whereby the work may be takenoff and placed on the horn.

19. In a machine for inserting nails into boots and shoes, a horn orwork-support; a lever, means to connect said horn with one arm of saidlever; a pivoted cam-operated lever; means to connect the cam-operatedlever with the lever to which the horn is connected; and a rotatableshaft; a cam mounted on said shaft and provided with a cam-surface of athrow sufficient to lower the horn enough to permit the work to beremoved from or applied to the horn; a stud or roller located at oneside of the fulcrum of the cam-operated lever and acted upon by saidcam-surface to actuate the cam-operated lever, to positively lower thesaid horn; and a brake mechanism to stop the rotation of the cam-shaft,and adjusted to operate with relation to the said cam-surface to stoprotation of the said shaft when the greatest throw of the cam-surface isin engagement with said stud or roller and the horn is in its loweredposition, whereby the work may be taken off and placed on the horn.

20. In an apparatus of the class described, means to hold the work inposition to be operated upon, a rotatable shaft, mechanism connective ofthe shaft and said means, actuated by the former, to governcompletelythe operation of said work-holding means, and brake mechanismconstructed and arranged to stop rotation of the said shaft when thework-holding means is in position to permit removal of the work.

21. In an apparatus of the class described,

- means for holding the Work in position to be operated upon, arotatable shaft, mechanism connecting said shaft and said means andactuated by the shaft to control the depression of the work-holdingmeans for permitting the removal of the Work, and brake mechanismconstructed and arranged to stop rotation of said shaft when thework-holding means is in a position to permit removal of the work.

22. In an apparatus of the class described, a vertically-movable horn orwork-support, a rotatable shaft, means intermediate said shaft and thehorn, actuated by the former, to depress the horn, and a brake mechanismconstructed and arranged to stop rotation of said shaft when the horn isdepressed by said means, whereby the horn is left in such position as toallow the work to be removed.

23. In a machine of the class described, a main shaft, a clutch, abrake, means for releasing the clutch and applying the brake, and ahorn, in combination with mechanism arranged to be operatedindependently of the regular operation of the machine for depressing thehorn to permit removal of the Work, and means connected with the mainshaft for actuating said mechanism automatically after the clutch isreleased and before the brake becomes effective, whereby the momentum ofthe shaft is utilized for depressing the horn.

24. In a machine of the class described, a main shaft, a clutch, abrake, means for releasing the clutch and applying the brake, and ahorn, in combination with mechanism arranged to be rendered operativewhen the clutch is released for depressing the horn to permit removal ofthe work, said mechanism being actuated by the momentum of the mainshaft after clutch release and before the brake is applied.

25. In a machine of the class described, a main shaft, a clutch, abrake, mechanism for releasing the clutch and applying the brake, a hornand means operated from the main shaft independently of the machinesregular operation for, automatically depressing the horn after clutchrelease and before the brake becomes effective, whereby the momentum ofthe shaft is utilized.

, 26. In a machine of the class described, a main shaft, a clutch, abrake, mechanism to release the clutch and apply the brake, incombination with means governed by rotation of the shaft to maintain thebrake in inoperative position through a predetermined period afterclutch release, a horn and means for depressing the horn for removal ofthe Work, said means being arranged to be actuated from the main'shaftafter the clutch is released, whereby the momentum of the shaft isutilized before the brake becomes effective.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS A. GASGRAIN.

Witnesses:

JOHN C. EDWARDS, HADLEY P. FAIRFIELD.

